KEI 192 Instruction 电路图.pdf

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1、Model 192 Instruction Manual Contains Operating and Servicing Information for Model 192 Programmable DMM and Model 1910 AC Option Publication Date: June 1984 Document Number: 30983 Rev. C RadioFans.CN 收音机爱 好者资料库 WARRANTY Keithley instruments, Inc. warrants this product to be free from defects in mat

2、erial and workmanship for a period of 1 year from date of ship- ment. During the warranty period, we will, at our option, either repair or replace any product that proves to be defective. To exercise this warranty, write or call your local Keithley represent- ative, or contact Keithley headquarters

3、in Cleveland, Ohio. You will be given prompt assistance and return instructions. Send the instrument, transportation prepaid, to the indicated service facility. Repairs will be made and the instrument returned, transportation prepaid. Repaired products are warranted for the balance of the original w

4、arranty period, or at least 90 days. LIMITATION OF WARRANTY This warranty does not apply to defects resulting from unauthorized modification or misuse of any product or part. This warranty also does not apply to fuses, batteries, or damage from battery leakage. This warranty is in lieu of all other

5、warranties, expressed or implied, in- cluding any implied warranty of merchantability or fitness for a par- ticular use. Keithley Instruments, Inc. shall not be liable for any indirect, special or consequential damages. STATEMENT OF CALIBRATION This instrument has been inspected and tested in accord

6、ance with specifications published by Keithley Instruments, Inc. The accuracy and calibration of this instrument are traceable to the National Bureau of Standards through equipment which is calibrated at planned intervals by comparison to certified standards maintained in the Laboratories of Keithle

7、v Instruments, Inc. Keithley Instruments, Inc. I instruments Division 28775 Aurora Road i Cleveland, Ohio 44139 , “.%A Phone: (216) 248-0400 / Telex: 98.5469 RadioFans.CN 收音机爱 好者资料库 Instruction Manual Model 192 Programmable DMM 01982, Keithley Instruments, Inc. Cleveland, Ohio, U.S.A. Document Numbe

8、r: 30983 RadioFans.CN 收音机爱 好者资料库 SPECIFICATIONS DC VOLTS TABLE OF CONTENTS PARAGRAPH TITLE PAGE 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12 2.1 2.2 2.2.1 2.2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 2.13 2.14 2.15 3.1 3.2 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10 4.11 SECTION l-GENERAL INF

9、ORMATION Introduction . Features . WarrantyInformation . ManualAddenda . SafetySymbolsandTerms . Unpackingandlnspection . Specifications. . Preparation for Use . Line Power . Line Voltage Selection . LineFrequencySelection . ., Repackingforshipment . SECTION Z-ACCESSORIES Introduction . RackMounting

10、Kits . Model1019ARackMountingKit . Model1019SRackMountingKit . Model1600AHighVoltageProbe . Model1641KelvinTestLeadSet. Model165150AmpereShunt. . Model1681Clip-OnTestLeadSet. Model1682ARFProbe. . Model 1683 Universal Test Lead Kit. . . Model 1685 Clamp-On AC Current Probe . Model1901CurrentAdapter .

11、 Model1910ACVoltageOption. . Model1920TRMSACVoltOption . Model19231EEE-488lnterface. Modal1924RearlnputAdapter. Model7008IEEE.488Cable. . SECTION 3-FRONT AND REAR PANEL CONTROLS Introduction . Front Panel . BenchModeofOperation . Bench Programming Mode of Operation. . SystemModeofOperation . RearPan

12、el . SECTION 4-BASIC DMM OPERATION Introduction . Powerup. Operating Instructions . zero . Overrangelndication . Filter . DCVoltageMeasurement . ResistanceMeasurement . ., Four-Wire Ohms Measurement . AC Voltage Measurement (1910AC Option). . AC Voltage Measurement l192OTRMS Optionl, . 1-l l-l l-l 1

13、-l l-l l-l l-l l-l 1-2 l-2 1.2 1-2 2-l 2-1 2-l 2-1 2-l 2-1 2-l 2-l 2-2 2-2 2-2 2-2 23 2-3 2-3 2-3 2-3 3-1 3-l 3-l 3-l 3-l 3-2 4-l 4-1 4-l 4-l 4-2 4-2 4-3 4-3 4-4 4-4 45 TABLE OF CONTENTS (CONT.1 PARAGRAPH TITLE PAGE SECTION I; 5.5 ProgramZ.Filter . 5-4 5.6 Program3.Dffset/Scale 5-4 5.7 Program4. Per

14、cent Deviation. . 5.8 Program5,Min/Max . z:E 5.9 Program:;(: Program7.DataLogger . 5-J 5-B lEEEBufferOpmt,on . 5.12 ProgramB.ServiceProgram . ;I; SECTION 6-PERFORMANCE VERIFICATION 6.1 Introduction . 6.2 Environmental Conditions . E:; 6.3 RecommendedTestEquipment 6.4 InitialConditions . E:i 6.5 Perf

15、ormanceverification . 6-l 6.5.1 DC Voltage Accuracy Check 12OV to 12OOV ranges) . 6-l 6.5.2 DC Voltage Accuracy Check (.2V to2V ranges1 . . 6.5.3 AC Voltage Accuracy Check (With Model 1910 AC Voltage Option Installed) . ;I: 6.5.4 Resistance(R)AccuracyCheck . 6-2 SECTION 7-THEORY OF OPERATION 7.1 Int

16、roduction . 7-l 7.2 Overall Functional Description . 71 7.3 Analog Circuit Description . 7-3 7.3.1 InputMultiplexer . 7-3 7.3.2 DCVoltage Measurement 7.3.3 ResistanceMeasurement . ;:; 7.3.4 ACVoltageMeasurement 7.3.5 InputBufferAmplifier . ;I: 7.3.6 AIDConverter . 7-7 7.4 Digital and Display Circuit

17、 Description . 7.4.1 Microcomputer (Refer to Schematic 309750) . ;:; 7.4.2 Memon/ 7.4.3 . AddressDecoder. ;:; 7.4.4 Reset . 7.4.5 FrontPanelSwitchPort . ;:; 7.4.6 LineFrequency . 7.11 7.5 AIDControl . 7.11 7.5.1 ClockCircuit 7.6 DisplayCircuit . ;I;: 7.7 PowerSupply . 7.14 SECTION E-MAINTENANCE 6.1

18、Introduction . B-l 6.2 Calibration . 8.1 6.2.1 RecommendedTestEquipment . B-l 8.2.2 Environmental Conditions . B-1 ii TABLE OF CONTENTS (CONT.) PARAGRAPH TITLE PAGE 8.2.3 Warmup . 8.2.4 Calibration Adjustments . 8.3 Troubleshooting Set-Up Procedures . 8.3.1 Line Power Fuse iFlO1) Replacement . 8.3.2

19、 Line Voltage Selection . 8.3.3 Disassembly . 8.3.4 Special Handling of Static Sensitive Devices . 8.4 Troubleshooting Procedure . 8.4.1 Line Power . 8.4.2 A/D Converter and Display . 8.4.3 ACConverter . 8.4.4 DC Attenuator and Ohms Sources and Resistors. . 8.4.5 DigitalBoard . 9.1 9.2 9.3 9.4 9.5 S

20、ECTION B-REPLACEABLE PARTS lntrodution . Parts List . Ordering Information . Factory Service . Schematic Diagrams and Component Location Drawings . . . . . . . . . . . . . . . . 8-l ai 8-2 8-2 8-4 8.4 8-5 8-5 8-6 8-6 86 86 86 9-1 9-1 9-1 9-l 9- 1 iii LIST OF ILLUSTRATIONS FIGURE TITLE PAGE l-l 2-1 2

21、-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9 2-10 2.11 2-12 2-13 2.14 3-l 3-2 4-1 4-2 4-3 4-4 4-5 4-6 5-1 6-l 71 7-2 7-3 J-4 7-5 7-6 J-7 J-8 7-9 7-10 7-11 7-12 7.13 7-14 7.15 7-16 7.Ii J-18 7-19 7-20 8-l 9-1 9-2 9-3 9-4 9-5 l-2 2-1 2-l 2-1 2-1 2-2 2-2 2-2 22 Instrument Packaging . Model1019RackMountingKit . Model

22、1600AHighVoltageProbe . Model 1641 Kelvin Test Lead Set . Model165150AmpereShunt . Model1681Clip-OnTestLeadSet . Model1682ARFProbe. . Model 1683 Universal Test Lead Kit . Clamp-OnACCurrentProbe . Model1901CurrentAdapter. . Model1910ACVoltageOption . Model 1920 TRMS AC Voltage Option . Model 1923 IEEE-488 Interface . . . IEEE-488Connector. . Model1924RearlnputAdapter . Modell92FrontPanel. . Model192RearPanel . Effect of Zero Function on Dynamic Range of Measurements .